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Abstract #0646

Continuous Arterial Spin Labeling with On-Coil Amplification at 7T

Gaël Saïb1, Sherry Huang2, Emily Long1, S. Lalith Talagala3, Hellmut Merkle1, Alan P. Koretsky1, and Natalia Gudino1
1NINDS/LFMI, National Institutes of Health, Bethesda, MD, United States, 2Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States, 3NINDS/NMRF, National Institutes of Health, Bethesda, MD, United States


Continuous arterial spin labeling using a separate neck labeling coil is an attractive approach for imaging perfusion at 7T. This approach is hindered by specialize hardware including a labeling coil and a separate amplifier located outside the magnet room. On-coil amplifiers have demonstrated higher RF power efficiency with minimal cable loss and patient-coil interaction. This work shows that a separate labeling coil using on-coil amplification can be used for flow driven adiabatic inversion in a flow phantom suggesting that it may provide a suitable approach to simplify the hardware package required as well as to improve CASL studies at 7T.

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